package com.yupi.usercenter.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yupi.usercenter.common.ErrorCode;
import com.yupi.usercenter.exception.BusinessException;
import com.yupi.usercenter.model.domain.User;
import com.yupi.usercenter.service.UserService;
import com.yupi.usercenter.mapper.UserMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import static com.yupi.usercenter.contant.UserContant.USER_LOGIN_STATE;

/**
* @author heroyang
* 用户服务实现类
*/
@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService{

    @Resource
    private UserMapper userMapper;
    /**
     * 盐值，混淆密码
     */
    private static final String SALT = "yupi";


    @Override
    public long userRegister(String userAccount, String userPassword, String checkPassword,String planetCode) {
        //1.校验
        if (StringUtils.isAnyBlank(userAccount, userPassword, checkPassword,planetCode)) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"参数为空");
        }
        if (userAccount.length() < 4) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"用户账户过短");
        }
        if(userPassword.length()<8 || checkPassword.length()<8){
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"用户密码过短");
        }
        if (planetCode.length() > 5){
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"星球编号过长");
        }
        //账户不能包含特殊字符
        String validPattern = "[`~!@#$%^&*()+=|{}':;',\\\\[\\\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]";
        Matcher matcher = Pattern.compile(validPattern).matcher(userAccount);
        if (matcher.find()) {
            return -1;
       }
        //密码和校验密码相同
        if (!userPassword.equals(checkPassword)) {
            return -1;
       }

        //账户不能重复
        QueryWrapper<User> queryWrapper=new QueryWrapper<>();
        queryWrapper.eq("userAccount",userAccount);
        long count = userMapper.selectCount(queryWrapper);
        if (count > 0){
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"账号重复");
        }

        //星球编号不能重复
        queryWrapper=new QueryWrapper<>();
        queryWrapper.eq("planetCode",planetCode);
        count = userMapper.selectCount(queryWrapper);
        if (count > 0){
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"编号过短");
        }
        //2.加密

        String encryptPassword = DigestUtils.md5DigestAsHex((SALT + userPassword).getBytes());
       // 3.插入数据
        User user = new User();
        user.setUserAccount(userAccount);
        user.setUserPassword(encryptPassword);
        user.setPlanetCode(planetCode);
        boolean saveResult = this.save(user);
        if (!saveResult) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR,"保存错误");
         }
        return user.getId();

       }

    @Override
    public User userLogin(String userAccount, String userPassword, HttpServletRequest request) {
        //1.校验
        if (StringUtils.isAnyBlank(userAccount, userPassword)) {
            return null;
        }
        if (userAccount.length() < 4) {
            return null;
        }
        if(userPassword.length()<8 ){
            return null;
        }

        //账户不能包含特殊字符
        String validPattern = "[`~!@#$%^&*()+=|{}':;',\\\\[\\\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]";
        Matcher matcher = Pattern.compile(validPattern).matcher(userAccount);
        if (matcher.find()) {
            return null;
        }

        //2.加密

        String encryptPassword = DigestUtils.md5DigestAsHex((SALT + userPassword).getBytes());
        //查询用户是否存在
        QueryWrapper<User> queryWrapper=new QueryWrapper<>();
        queryWrapper.eq("userAccount",userAccount);
        queryWrapper.eq("userPassword",encryptPassword);
        User user = userMapper.selectOne(queryWrapper);

        //用户不存在
        if (user == null) {
            log.info("user login failed, userAccount Cannot match userPassword");
            return null;
            }

        //3.用户脱敏
        User safetyUser=getSafetyUser(user);
        //4.记录用户的登录状态
        request.getSession().setAttribute(USER_LOGIN_STATE,safetyUser);
        return safetyUser;
  }

    /**
     * 用户脱敏
     * @param originUser
     * @return
     */
    @Override
  public User getSafetyUser(User originUser){
        if (originUser == null){
            return null;
        }
      User safetyUser=new User();
      safetyUser.setId(originUser.getId());
      safetyUser.setUsername(originUser.getUsername());
      safetyUser.setUserAccount(originUser.getUserAccount());
      safetyUser.setAvatarUrl(originUser.getAvatarUrl());
      safetyUser.setGender(originUser.getGender());
      safetyUser.setPhone(originUser.getPhone());
      safetyUser.setEmail(originUser.getEmail());
      safetyUser.setPlanetCode(originUser.getPlanetCode());
      safetyUser.setUserRole(originUser.getUserRole());
      safetyUser.setUserStatus(originUser.getUserStatus());
      safetyUser.setCreateTime(originUser.getCreateTime());
      return safetyUser;

  }

    /**
     * 用户注销
     * @param request
     */
    @Override
    public int userLogout(HttpServletRequest request) {
        //移除登录态
        request.getSession().removeAttribute(USER_LOGIN_STATE);
        return 1;
    }
}





